Gage-cock



Patented lan. 3|, |899.

No. 618,696. Y

B. A. LEGG.

GAGE COCK.

{Application led Mar. 29, 189B.)

(No Model.)

A TTRNEl/e) Nrran STATI-3s vATENT FFICE.

BENJAMIN A. Lace, on PIrTsnURe, PENNSYLVANIA, AssIeNoR To JOI-IN II. nnIcKEn, on sAME PLACE, AND WILLIAM o. WINTERHALTER, on

INGRAM, PENNSYLVANIA;

GAGE-COCK.

SPECIFICATION forming part of Letters Patent No. 618,696, dated January c1, Iseo.

Application filed March 29, 1898. Serial No. 675,593. (No model.)

T0 @ZZ wt'om tjncty concern:

Be it known that I, BENJAMIN A. Luce, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Gage- Cock Valves, of which the following is a specitication, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in gage-cocks; and it has for its object to provide a novelA and effective form of gage-cock wherein the valveseat when it has become worn may be readily removed and a new seat inserted.

A further object of the invention is to form within the plug of the gage-cock a ,spider which is adapted to receive the inner end of the valve-stem, and thereby act as a guide for the said stem, so that the valve will be perfectly and evenly seated at all times.

It is the common practice to construct gagecocks in which no packing is employed, and in course of time the valve-stem is liable to become grooved in its bearing from the action of the steam, so that when the valve-stem is depressed or forced inwardly to unseat the valve the steam and hot water is permitted to escape through the aforesaid grooves and is very liable to scald or burn the hand of the operator. To obviate this is another object of my invention, and to this end I cast or otherwise secure upon the valve-stem a concavo-convexv flange which acts as a shield to protect the hand of the operator.

Another object of my invention is to provide a gage-cock which will be extremely simple in its construction, strong, durable, eectual in its operation, and comparatively inexpensive to manufacture.

With the above and other objects in view the invention finally consists in the novel construction, combination, and arrangement of parts, to be hereinafter more specically described, and particularly pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specicatiomand wherein like figures of reference indicate similar parts throughout the severalviews, in which@ Figure l is a side view of my improved gage-cock, showing the lever attached thereto for operating the same. Fig. 2 is a longitudinal sectional view with the lever detached. Fig. 3 is a plan view of the valve-stem, partially in section, showing the valve or disk formed integral with the stem. Fig. 4L is a transverse vertical sectional view. Fig. 5 is a side viewof a portion of the gage-cock, showing the spring attachment for retaining the Valve seated. Fig. 6 is a side view of the detachable valve-seat. Fig. 7 is a plan view of the same.

Referring now to the drawings by referencefigures, l denotes the barrel, which has formed integral therewith a hollow tubular plug 2, screw-'threaded on its outer face, and adapted to engage into the boiler, as in the ordinary construction. These are cast integral with each other and are or may be formed at the intersection of the two with an external nut or iiange 3, adapted to abut against the boiler-shell when the plug is inserted to its full depth. Formed integral with the barrel l and within the same is a spider 4, the central opening of which is Vadapted to receive the inner end of the valve-stem, for which the spider acts as a support as well as a guide. A casing 5 is provided which supports the valve-stem and has an inwardly-projecting iian ge 6,screw-threaded on its outer periphery to engage with the screw-threads provided therefor on the inner periphery of the barrel l. This flange 6 is likewise provided on its in- `ner periphery with screw-threads, which are adapted to receive the screw-threads formed on the outer periphery of the valve-seat 7. This valve-seat is or may be provided with an annular flange 8, for which a shoulder 9 may be provided in the screw threaded flange 6.

For the purpose of removing the valve-seat I provide the same with inwardly-projecting lugs 10, which may be engaged by a Spanner for this purpose. This valve-seat is preferably provided with an inclined face l1, so that the valve or disk will seat neatly on the 1 same.

In the construction shown in Fig. 2 the valve-stem 12 is reduced on its inner end, thereby forming the shoulder 14, which acts IOC as a stop for the adj ustable disk or valve 15, which is or may be held in its position upon the valve-stem by a nut 16, for which a portion of the valve-stem is screw-threaded, as shown at 17. The easing 5 has preferably formed therewith a spout 18, the aperture or opening of which registers with the chamber 19 of the casing. To prevent the scalding or burning of the hands when operating the valve-stem, as is sometimes occasioned by reason of the steam having grooved the stem within its bearing, I provide a concavo-eonvex annular flange 2O upon the valve-stem, with its concave face projecting toward the end of the casing 5 and so seated upon the valve-stem that it will not interfere with or limit the movement of the valve-stem in any manner to prevent the u nseatin g of the valve or disk 15. gral with the stem, and in casting said stem I may also provide the same with a slot 21,

which is adapted to receive an arm 22, se-

cured by a removable screw 23 and an operating-lever 2.4L. This operating-lever is adapted to be fulcrumed to an extending arm or bracket 25, carried by the collar 26, which is mounted upon and secured to the projecting portion 5 of the casing 5. W'ith this form of operating-lever the valve is retained normally seated by means of a spring 26, one

end of which engages in the armv or bracket 25 and the other end of which is secured'to the lever 2-1, preferably by passing the same through a keeper 27, carried by saidlever.

In Fig5 I show the gage-cock equipped with a spring for retaining the valve norm ally seated and in which the operating-lever is not employed, the valve being adapted to be unseated by direct pressure upon the outer end of the valve-stem. tion I employ a spring composed of a single strand of wire or other suitable material, which is formed in a coil and the two ends projecting in the salne relative direction, the

one end 2S engaging in the collar 29, mounted upon the projection 5, and the end 30 engaging in the slot or aperture provided therefor in the valve-stem in the same manner as the arm 22.

In Fig. 3 I show a modified form of valvestem in which the stem 31 may be of the same diameter throughout and which has the valve or disk 32 cast integral therewith. The remainder of the construction of this valvestem, including the shield 2O and slot 21, is identical with that heretofore described, andl it may be employed either with the form of lever shown in Fig. 1 or the spring shown in Fig. 5. In this construction of a gage-cock I desire to call particular attention to the formation of the spider within the barrel, which receives the inner end of the valve-stem, and thereby acts as a guide to prevent any binding of the stem through the action of the steam and insures at all times a perfect seating of the valve or disk upon its seat. When it is desired to test the water-level of the This shield 20 may be cast inte- ,l

In such a construcl boiler, the operator presses upon the head of the valve-stem, thus forcing the stem inwardly, and thereby unseatin g the valve,permitting the steam or water to escape through the chamber 19 and the lateral opening in the spout 18, communicating therewith. O11 releasing the pressure on the stem the valve is immediately reseated by the internal pressure in the boiler, and its retention in its seat is assured by the springs, whether they be of the form shown in Figs. 1 and 5 or other suitable construction.

The manner in which the valve 9 may be :removed and a new one substituted will be readily apparent to those skilled in the art, and it will also be observed by the skilled mechanic that various changes may be made in Ithe details of construction.

Having fully described my invention, what I claim as new, and desireto secure by Letters ZPLGIIE, S` 1. In a gage-cock, the combination with the .hollow barrel of the internal spider formed 1integral therewith, a longitudinally-moving valve-stem, a casing or head engagingthe holflow barrel, a removable valve-seat securedin said casing, a valve-disk mounted upon the `stern and resting'normally upon the valveseat, and` a shield mounted upon the valvestem, substantially as shown and described. 2. vIny a gage-cock, the combination of the `ghollow barrel, the casing engaging the same, the spider arranged within the barrel, the llongitudinally-moving valve-stem operating lin the easing and spider, the valvedisk mounted upon the stem, the removable valvelseat for said valve-disk, and a shield mountl'ed upon the valve-stem, beyond the'easing, substantially as shown and described. x 3. In a gage-cock the combination with the hollowA barrel, of the internal spider formed lintegral therewith, the easing engaging the barrel,`the longitudinally-movin g valve-stem passing through said casing and spider, the Ivalve-disk mounted upon the stem, the shield mounted upon the stem beyond the casing, and a spring-actuated operating-lever carryin g an arm which engages the valvestem,sub `stantially as shown and described.

4. In a gage-cock, the combination with the hollow barrelof the internal spider formed integral therewith, the casing engaging the barrel, the longitudinally-moving valve-stem passing through the casing and the spider, the valve-disk mounted upon the said stem, the shield carried by the stem at a point beyond the easing, the removable valve-seat, and means for retaining the valve normally l upon its seat, substantially as shown and described.

In testimony whereof I afix my signature in the presence of two witnesses.

BENJAMIN A. LEGG.

Vitnesses:

JOHN NoLAND, WILLIAM E. MINOR.

IOO

IIO 

